SOLUTION: I am having a hard time with a question, Complete the multiplication: AB A=[ 6 0] B=[2 8] [1.2 -3] [.6 3] For the answer I chose [6 0] [1.2 -3] The teacher

Algebra ->  Matrices-and-determiminant -> SOLUTION: I am having a hard time with a question, Complete the multiplication: AB A=[ 6 0] B=[2 8] [1.2 -3] [.6 3] For the answer I chose [6 0] [1.2 -3] The teacher      Log On


   

Question 7050: I am having a hard time with a question, Complete the multiplication: AB
A=[ 6 0] B=[2 8]
[1.2 -3] [.6 3]
For the answer I chose
[6 0]
[1.2 -3]
The teacher said that I got the answer wrong so can someone tell me what the correct answer is because I keep comming to this same conclusion?
Answer by longjonsilver(2297) About Me  (Show Source):
You can put this solution on YOUR website!
A = matrix%282%2C2%2C+6%2C0%2C+1.2%2C-3%29
B = matrix%282%2C2%2C+2%2C8%2C+0.6%2C3%29

A.B or whatever the notation for multiplication is in matrices gives:

matrix%282%2C2%2C+12%2C48%2C+0.6%2C+0.6%29

method? there are 4 places you want to calculate. For each position, choose the row of A and the column of B that contain that position.

so for the answer 48, i had the top row of A and the righthand column of B. This gave me (6x8)+(0x3) --> 48

jon.